National Atmospheric Release Advisory Center dispersion modeling of the Full-scale Radiological Dispersal device (FSRDD) field trials
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
The results of the National Atmospheric Release Advisory Center (NARAC) model simulations are compared to measured data from the Full-Scale Radiological Dispersal Device (FSRDD) field trials. The series of explosive radiological dispersal device (RDD) experiments was conducted in 2012 by Defence Research and Development Canada (DRDC) and collaborating organizations. During the trials, a wealth of data was collected, including a variety of deposition and air concentration measurements. The experiments were conducted with one of the stated goals being to provide measurements to atmospheric dispersion modelers. These measurements can be used to facilitate important model validation studies. For this study, meteorological observations recorded during the tests are input to the diagnostic meteorological model, ADAPT, which provides 3–D, time-varying mean wind and turbulence fields to the LODI dispersion model. LODI concentration and deposition results are compared to the measured data, and the sensitivity of the model results to changes in input conditions (such as the particle activity size distribution of the source) and model physics (such as the rise of the buoyant cloud of explosive products) is explored. The NARAC simulations predicted the experimentally measured deposition results reasonably well considering the complexity of the release. Lastly, changes to the activity size distribution of the modeled particles can improve the agreement of the model results to measurement.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1251057
- Report Number(s):
- LLNL-JRNL-668319; TRN: US1601710
- Journal Information:
- Health Physics, Vol. 110, Issue 5; ISSN 0017-9078
- Publisher:
- Health Physics SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Deposition Measurements From the Full-Scale Radiological Dispersal Device Field Trials
|
journal | January 2016 |
Overview of the Full-scale Radiological Dispersal Device Field Trials
|
journal | January 2016 |
The National Atmospheric Release Advisory Center modelling and decision-support system for radiological and nuclear emergency preparedness and response
|
journal | January 2007 |
Validation of the DIFFAL, HPAC and HotSpot Dispersion Models Using the Full-Scale Radiological Dispersal Device (FSRDD) Field Trials Witness Plate Deposition Dataset
|
journal | January 2016 |
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